如何在Java中替换“”字符？

Question

I have

String a = "data=\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"1\"1\"1\"1\"1\\\\";

How can i replace

• " to \\"
• and \\ to \\\\

?

String result = a.replace("\"", "\\\"");

OR

String result = a.replace(""", "\"");

Answer 1

String result = a.replace("\\","\\\\").replace("\"", "\\\"");

This would first replace all \\ with \\\\ and then all " with \\" if that is what you want.

Note that doing it the other way round would result in " being replaced with \\\\" in the end, since first it get replaced with \\" and then the \\ would be replaced with \\\\ resulting in \\\\" .

Additional note: your data string is not well-formed and should not compile: it ends in \\" which is not a valid string literal delimiter (the literal ends in \\\\\\\\\\" which would be the string data \\\\" ) - change that to an even number of slashes or add another " to the end in order to fix that.

Answer 2

The former. The latter is not well-formed Java code.

Answer 3

you a string error,Less a quote

String a = "data=\\"0\\"1\\"1\\"1\\"1\\"0\\"0\\"0\\"0\\"0\\"0\\"1\\"1\\"1\\"1\\"0\\"0\\"0\\"0\\"0\\"1\\"1\\"1\\"1\\"1\\\\\\"";

System.out.println(a.replace("\\"", "\\\\\\""));

Answer 4

Since "String result = a.replace(""", "\\"");" does not compile, does that answer your question?